Balanced self-shielded gradient coils

Details Balanced self-shielded gradient coils Balanced self-shielded gradient coils

1987-11-25

1988-12-27

Chapman, John

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

336 84C, 336232, 324318, 335299, 335301, G01R 3320

Patent

active

047943386

ABSTRACT:
Self-shielded gradient coils are used to eliminate interactions between gradient coils and external structure. Interactions between gradient coils for different gradient axes are controlled by means of a balanced interconnection within each separate gradient coil set. One or both of the inner and outer coils within a gradient coil set are split such that for any localized capacitive current flow between coil sets there will be an equal and opposite current flow somewhere else between the coil sets.

REFERENCES:
patent: 3474295 (1969-10-01), Marshall
patent: 4320342 (1982-03-01), Heinzerling
patent: 4617516 (1986-10-01), Shenck
patent: 4646024 (1987-02-01), Shenck et al.
patent: 4680666 (1987-07-01), Rios
patent: 4724412 (1988-02-01), Kalafala
patent: 4733189 (1988-03-01), Punchard et al.
patent: 4737716 (1988-04-01), Roemer et al.

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